…You can make your own DS Lite RumblePak?

The DS Lite will rumble away while you play, but the RumblePak that you have to use is less than optimally sized.

Instructables user Xyzzy has found a solution to that problem, hiding the pack in the dust cover for under cover rumble. The mod uses an old Pokemon cart, a Nokia 5100 motor, and quite a bit of creativity, but if you’ve got some excess skill in the electronics department, it might be worth checking out.